An informal data type, that is a 5-tuple, and is the basic navigation data unit. The method Directory.get_crumbs() returns a list of such 5-tuples. The 5 items in a crumb 5-tuple are:
(url_path_from_root, component, crumb_label, title, directory)
The Navigation section contains numerous examples of the crumb 5-tuple.
In a normally traversed URL, the last crumb, in the list of crumb objects returned by the Gizmo(QP) Directory.get_crumbs() method, is the one for the current page. However Directory instances, and their methods, are by default not exposed to the template evaluation namespace.
This demo page shows two things:
- How to easily expose, explicitly for this page only, the Gizmo(QP) Directory.get_crumbs() method to the template evaluation namespace -- here passed as the get_crumbs keyword argument on page() (see the Python source for the Specials directory).
- A rendering, below, of the crumb for this page, i.e. of the last traversed crumb (see Template source below).
('/specials/crumb', 'crumb', 'Crumb', 'Crumb Tuple', <qp.sites.demo.pages.specials.SpecialsDir object at 0x8484ecc>)